Allied Telesis AT-3012TR Installation Manual
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Allied Telesis AT-3012TR Installation Manual

Allied Telesis AT-3012TR Installation Manual

Multiport repeaters
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CentreCOM
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  • Page 1 Allied Telesyn CentreCOM AT-3012TR AT-3016TR AT-3024TR Multiport Repeaters Installation Manual...
  • Page 2 Copyright 1995 Allied Telesyn International Corp. All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn International. Allied Telesyn reserves the right to make changes in specifications and other information contained in this document without prior written notice.

  • Page 3: Electrical Safety And Installation Requirements

    RADIATED ENERGY U.S. Federal Communications Commission Note: This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
  • Page 4 MONTAGEANWEISUNGEN VORSICHT : Diese Modelle sind für Betrieb in horizontaler Position entworfen worden. Das Gerät darf NICHT OHNE Gebrauch eines dafür entworfenen Allied Telesyn-Vertikalmontagegestells in VERTIKALER POSITION montiert werden. VORSICHT : Die Entlüftungsöffnungen dürfen nicht versperrt sein und müssen zum Kühlen freien Zugang zur Raumluft haben. VORSICHT : Die Gummifüße NICHT ENTFERNEN, außer bei Gebrauch des Allied Telesyn-Vertikalmontagegestells.
  • Page 5 ELEKTRISCHE—SNOEREN Gebruik een elektrisch snoer, maximum 4,5 meter lang, berekend voor ten minste 6 ampère, 250 V, uit HAR vervaardigd, met aan het ene uiteinde een gevormde IEC 320 stekker en aan het andere uiteinde een stekker die goedgekeurd is door het land waar het toestel zal worden gebruikt.
  • Page 6 ASENNUS SÄHKÖ—AUTOMAATTINEN JÄNNITTEENSÄÄTÖ Tämä tuote säätää automaattisesti mihin tahansa jännitteeseen ohjetarrassa annettujen arvojen välillä. SÄHKÖ—TYYPPILUOKAN 1 LAITTEET TÄMÄ LAITE TÄYTYY MAADOITTAA. Pistoke täytyy liittää kunnollisesti maadoitettuun pistorasiaan. Virheellisesti johdotettu pistorasia voi altistaa metalliosat vaarallisille jännitteille. SÄHKÖ—JOHTOON LIITTYVÄ HUOMAUTUS Käytä seuraavanlaista virtajohtoa: maksimipituus 4,5 metriä, minimiteho 6 ampeeria, 250 V, valmistettu HAR-johdostosta, muovattu IEC 320 -liitin toisessa päässä...
  • Page 7 FORSIKTIG : STRØMLEDNINGEN BRUKES TIL Å SLÅ APPARATET AV. HVIS DU VIL DEAKTIVISERE UTSTYRET, må du fjerne strømledningen. INSTALLASJON ELEKTRISK—AUTO SPENNINGSTILPASSING Dette produktet vil automatisk bli tilpasset hvilken som helst strøminnstilling i de områdene som vises på etiketten. ELEKTRISKE—TYPE 1. KLASSE UTSTYR DETTE UTSTYRET MÅ...
  • Page 8 SEGURIDAD AVISOS ELECTRICOS ADVERTENCIA: PELIGRO DE ELECTROCHOQUE Para evitar un ELECTROCHOQUE, no quite la tapa. No hay ningún componente en el interior al cual puede prestar servicio el usuario. Esta unidad contiene VOLTAJES PELIGROSOS y sólo deberá abrirla un técnico entrenado y calificado. Para evitar la posibilidad de ELECTROCHOQUE desconecte la corriente eléctrica que llega al producto antes de conectar o desconectar los cables LAN.

  • Page 9: Table Of Contents

    Table of Contents Electrical Safety and Installation Requirements ........... i Chapter 1 Overview ..........................1 CentreCOM AT-30xxTR Multiport Repeaters ................... 1 Concepts ..............................1 Features ..............................2 Quick Installation Checklist..........................3 Setup ................................3 Testing................................. 4 Chapter 2 Installation ........................5 Site Requirements ............................
  • Page 10 System Check ............................9 Chapter 3 AT-3012TR Connectivity ..................... 11 Front Panel Layout............................11 Port Indicators ............................... 11 Chapter 4 AT-3016TR Connectivity ..................... 13 Front Panel Layout............................13 Port Indicators ............................... 13 Chapter 5 AT-3024TR Connectivity .................... 15 Front Panel Layout............................15 Port Indicators ...............................
  • Page 11 Appendix D CentreCOM AT-30xxTR Manual Feedback ............37 Index ..........................41...

  • Page 12: Chapter 1 Overview

    Chapter 1 Overview CentreCOM AT-30 xx TR Multiport Repeaters Concepts CentreCOM AT-30xxTR Multiport Repeaters provide low-cost connection for up to 24 IEEE 802.3 10BASE-T network segments. The series includes three different models, featuring 12, 16 and 24 RJ45 port connections for 10BASE-T networks.

  • Page 13: Features

    PORT OK PORT OK POWER 9 10 11 12 ACTIVITY MDI-X COLLISION 10 11 12 TERMINATOR RECEIVING RECEIVING POWER RECEIVING Figure 1: AT-3012TR Front Panel 10BASE-T NETWORK PORTS PORT OK STATUS RECEIVING POWER PORT OK PORT OK ACTIVITY MDI-X COLLISION TERMINATOR...

  • Page 14: Quick Installation Checklist

    AT-30xxTR Multiport Repeater The following checklist highlights the features found on each AT-30xxTR repeater. The remaining chapters of this manual discuss specifics of the port connections, indicators, and switches on each model. IEEE 802.3 compliant 10BASE-T repeater, Ethernet Version 1.0 and 2.0 compatible Supports all standard Ethernet media, including fiber optic, via AUI port (external transceiver may be required for the backbone)

  • Page 15: Testing

    RECEIVING RECEIVING POWER Straight-through Cable Figure 4: AT-3012TR Test Connection Check for valid LED settings: — Port OK #1 should be lit on the repeater side of the connection. — The Link LED on the AT-210T should also be lit.

  • Page 16: Chapter 2 Installation

    Chapter 2 Installation Site Requirements Attention Before installing AT-30xxTR repeaters, read the electrical safety and installation requirements starting on page i. If the installer is experienced with the AT-30xxTR repeater and does not need detailed installation instructions, refer to Quick Installation Checklist in Chapter 1 of this manual.

  • Page 17: Aui Network Port

    Installation Table 1: AT-30xxTR Model Types Number of Model Number Specification Station Ports AT-3012TR Single bank of two 1x6 units AT-3016TR Single bank of four 1x4 units AT-3024TR Double-stacked; two banks of 1x12 units AUI Network Port Each AT-30xxTR repeater has one Attachment Unit Interface (AUI) port to accommodate a 10BASE5 or thick Ethernet connection to the network backbone via a drop cable.

  • Page 18: Network Port Indicators

    AT-30xxTR Multiport Repeater Network Port A two-high set of LEDs located between and integrated with the BNC and AUI connectors on the front panel (see Figure 6) indicates which network Indicators port connection is in use. The left LEDs light if the BNC port is in use and the right LEDs light if the AUI port is in use (you can use both network ports at the same time, in which case both sets of LEDs will light up).
  • Page 19 Installation However, you may want to use one of the 10BASE-T ports to link one hub to another (you can also connect hub to hub via the network port). This type of connection requires the signal to “crossover” so that the TX pin at one end connects to the RX pin at the other end.

  • Page 20: Installation

    AT-30xxTR Multiport Repeater Installation 1. Carefully remove the repeater from its packaging materials. Retain the packing materials until satisfactory installation has been achieved. 2. Place the repeater in its operating area. 3. Apply power to the unit by plugging in the power cord. Check that the green Power LED on the front panel lights up.

  • Page 21: At-3012Tr Connectivity

    POWER RECEIVING Figure 8: AT-3012TR Front Panel Layout Port Indicators The AT-3012TR Repeater has LEDs for each port arranged in a central bank to provide status information easily, as shown in Figure 9. 10BASE-T NETWORK PORTS 10BASE-T PORT ACTIVITY STATUS...

  • Page 22: Chapter 3 At-3012Tr Connectivity

    AT-3012TR Connectivity PORT OK—This LED indicates that a valid link has been established and the port is not partitioned. RECEIVING—This LED flashes when incoming packets are present on the respective segment.

  • Page 23: At-3016Tr Connectivity

    Chapter 4 AT-3016TR Connectivity Front Panel Layout The AT-3016TR Multiport Repeater has 16 10BASE-T network ports supplied with shielded RJ45 connectors. The front panel layout is shown in Figure 10. 10BASE-T NETWORK PORTS PORT OK STATUS RECEIVING PORT OK PORT OK POWER ACTIVITY MDI-X...

  • Page 24: Chapter 4 At-3016Tr Connectivity

    AT-3016TR Connectivity PORT OK—This LED indicates that a valid link has been established and the port is not partitioned. RECEIVING—This LED flashes when incoming packets are present on the respective segment.

  • Page 25: At-3024Tr Connectivity

    Chapter 5 AT-3024TR Connectivity Front Panel Layout The AT-3024TR Multiport Repeater has 24 10BASE-T network ports supplied with shielded RJ45 connectors. The front panel layout is shown in Figure 12. Note that the ports are double-stacked, in two banks of six ports each.

  • Page 26: Chapter 5 At-3024Tr Connectivity

    AT-3024TR Connectivity 10BASE-T NETWORK PORTS PORT OK STATUS RECEIVING PORT OK PORT OK POWER ACTIVITY COLLISION MDI-X TERMINATOR RECEIVING RECEIVING POWER 10BASE-T NETWORK PORTS PORT OK RECEIVING TERMINATOR Figure 13: AT-3024TR Port Indicators PORT OK—This LED indicates that a valid link has been established and the port is not partitioned.

  • Page 27: Chapter 6 Troubleshooting

    Chapter 6 Troubleshooting 10BASE-T Cabling If the Power LED is not lit Check your power connections. If the Port OK LED is not lit 1. Check that the device at the opposite end of the UTP link is powered on, and that the cable is properly connected.

  • Page 28: Chapter 7 Configurations

    For consistency, the examples show AT-3012TR units, but any combination of the three models may be used interchangeably. Backbone Figure 14 illustrates connecting an AT-3012TR to a thick Ethernet backbone supporting 12 10BASE-T Ethernet segments. Connection Coaxial Ethernet (10BASE5)
  • Page 29 Configurations Coaxial Ethernet (10BASE5) Ethernet Transceiver AUI Cable PORT 10BASE-T NETWORK PORTS 10BASE-T PORT ACTIVITY STATUS PORT OK PORT OK PORT OK POWER 9 10 11 12 ACTIVITY MDI-X COLLISION 10 11 12 TERMINATOR RECEIVING RECEIVING POWER RECEIVING UTP Link Segment (Port #1 to Port #2) 10BASE-T NETWORK PORTS 10BASE-T PORT ACTIVITY STATUS...

  • Page 30: Bnc Bus

    AT-30xxTR Multiport Repeater BNC Bus Bussing of the AT-30xxTR multiport repeater is another possibility. You can accommodate more nodes on your network if you connect the repeaters through the BNC network port. Note that the worst case, node to node, is through only two repeaters;...

  • Page 31: Data Cabling Techniques

    Appendix A Data Cabling Techniques The following sections detail cabling techniques and port specifications for IEEE 802.3 media. For comprehensive treatment of these topics, refer to the original IEEE specification. 10BASE-T UTP (RJ45) links support transmissions up to 100 meters (328 ft.) at 10 Megabit data rates.

  • Page 32: Utp Hub-To-Mau Wiring

    Data Cabling Techniques Table 2 shows the five common modular cable specifications and their applicability to 10BASE-T network use. Table 2: Usable and Unusable Twisted Pair Cable Cable Twist/ 10BASE-T Cable Description Specification Level Character Foot Unshielded untwisted CCITT Individual UTP RS232 10BASE5 AT&T PDS...

  • Page 33: Utp Mau-To-Mau, Hub-To-Hub Wiring

    AT-30xxTR Multiport Repeaters Pin 1 Figure 19: RJ45 Cable UTP MAU-to-MAU, 10BASE-T MAU-to-MAU or hub-to-hub wiring generally requires a crossover cable located somewhere along the UTP cable run. This may Hub-to-Hub Wiring commonly occur at the punch-down block or between the RJ45 wall receptacle and the workstation.
  • Page 34 Data Cabling Techniques Table 3 shows which position the straight-through/crossover selection switch needs to be for the device configuration shown. Table 3: MDI and MDI-X Switch Settings for Common Connection Model Connected to MDI-X AT-30xxTR AT-30 xx TR RJ45 Transceiver AT-30 xx TR 1.

  • Page 35: 10Base5 (Thick) Ethernet

    AT-30xxTR Multiport Repeaters If you pair pins incorrectly, for example as shown in Figure 21, Diagram B, your network may have a high data error rate. In a straight-through cable, the transmit pins, 1 and 2, are paired, as are the receive pins, 3 and 6. In a crossover cable (Figure 20), pins 1 and 2, TD+ and TD-, are paired, as are pins 3 and 6, RD+ and RD-.

  • Page 36: Glossary

    Appendix B Glossary 10BASE2—Also called thin Ethernet, thinnet or CheaperNet, a 10 MHz baseband specification. Cable impedance is 50 and maximum coaxial segment length is 185 meters (607 ft.). 10BASE5—Also called thick Ethernet, a 10 MHz baseband specification. Cable impedance is 50 and maximum coaxial segment is 500 meters (1,640 ft.).
  • Page 37 Glossary BAYONET NUT COUPLE (BNC) CONNECTOR—A 10BASE2 thin coax connector with push-on BNC locking lug that quickly locks into place with a half twist. BIT RATE (BR)—The rate of data throughput on the medium in bits per second. Ethernet specifies 10 million bits per second. BIT TIME—The duration of one bit symbol (1/BR).
  • Page 38 AT-30xxTR Multiport Repeaters DIX CONNECTOR—See D-Sub Connector FOIRL — A fiber optic standard that allows up to 1,000 meters (3,280 ft.) of multimode duplex fiber optic cable in a point-to-point link. HARMONICA ADAPTER—This adapter provides a simple way to convert the 50-pin Telco connection to RJ45 connections.
  • Page 39 Glossary MANAGED MODULE— An intelligent repeater in a department concentrator chassis that makes management data available to the Master. MANAGEMENT AGENT—Software that is used to view hub activity and set hub variables. MASTER—A repeater in the topmost position in a department concentrator chassis that contains and downloads the management agent software to Backup and Slaves.
  • Page 40 AT-30xxTR Multiport Repeaters PROPAGATION DELAY—The time it takes a signal to travel from the input of a system component to the output. Usually measured in nanoseconds. IEEE 802.3 has specific propagation delay maxima for computing propagation budgets when designing a LAN. Cable length plays a major role in propagation delay; for example, a 50-meter (164-ft.) AUI cable has a maximum allowable propagation delay of 257 ns.
  • Page 41 Glossary TCP/IP PROTOCOLS—A set of protocols for intercomputer communication, including network level (Internet Protocol), transport level (Transmission Control Protocol or TCP) and application level protocols (for example, Telnet terminal emulation). TCP/IP has been used for many years in two country-wide networks, the ARPANET and MILNET.

  • Page 42: Technical Support Fax Order

    Appendix C Technical Support Fax Order Name _______________________________ _ ___________________________________ Company ____________________________ _ ___________________________________ Address _____________________________ _ ___________________________________ City ____________________State/Province____________ Zip/Postal Code __________ Country _________________ Phone __________________Fax ____________________ Incident Summary Model number of Allied Telesyn product I am using _____________________________ Firmware release number of Allied Telesyn product _____________________________ Other network software products I am using (e.g., network managers) ____________________________________ _ ___________________________________...
  • Page 43 Appendix D CentreCOM AT-30xxTR Manual Feedback Please tell us what additional information you would like to see discussed in the manual. If there are topics you would like information on that were not covered in the manual, please photocopy this page, answer the questions and fax or mail this form back to Allied Telesyn.
  • Page 44 Technical Bulletin Board Service 1 (206) 483-7979 CompuServe Go ALLIED World Wide Web http://www.alliedtelesyn.com For Information Regarding Allied Telesyn International Corp. Allied Telesyn International Corp. Allied Telesyn International Corp. 19015 North Creek Parkway Suite 200 950 Kifer Road Bothell, WA 98011...
  • Page 45 7, 24, 25, 26, 33 harmonica usable and unusable Telco 50-pin/RJ45 23, 24, 25, 26 applying power carrier sense AT-3012TR front panel carrier sense multiple access with collision de- AT-3016TR front panel tect (CSMA/CD) AT-3024TR front panel cascade configuration Attachment Unit Interface...
  • Page 46 Media Access Unit (MAU) external transceiver Medium Attachment Unit (MAU) Medium Dependent Interface (MDI) 8, 32 model types features module fiber optic backup front panel, AT-3012TR master front panel, AT-3016TR slave front panel, AT-3024TR modules AT-3624TR 7, 25, 26 glossary network configuration...
  • Page 47 Index retiming segmentation 9, 33 Signal Quality Error (SQE) Simple Network Management Protocol (SNMP) site requirements SQE test Station Port Status indicators station ports straight-through cable system check TCP/IP protocols Telco connector Termination Switch testing transceiver 1, 4, 9 unmanaged module Unshieled Twisted Pair (UTP) UTP cable ventilation...

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